Visible disposable gasoline filter for outboard motors



P 1961 c. F. H. PFEIFFER 3,000,504

VISIBLE DISPOSABLE GASOLINE FILTER FOR OUTBOARD MOTORS Filed June 13, 1958 INVENTOR. flea fih. pFE/FFEZ BY A777:

3,000,504 VISIBLE DISPOSABLE GASOL FHTER FOR OUTBOARD MOTO Carl. F. H. Pfeifier, 429 S. 8th St., Quincy, Ill. Filed June 13, 1958, Ser. No. 741,954 1 Claim. (Ci. 21094) This invention relates to filters for fuel lines such as are employed between fuel tanks and an internal combustion engine, and has more specific use on boats having outboard motors, where portable fuel tanks are employed.

The principal object of the present invention is to provide a visible fuel filter for fuel lines, which will readily indicate the flow of fuel and the extent of foreign matter collected by the filter.

Another important object of the invention is the same as the preceding, excepting that the filter has a foreign matter collecting element which is disposable and easily replaced.

Another important object of the invention is to provide a visible disposable gasoline filter of the character stated, wherein the filter unit is of inexpensive construction and can be easily replaced from time to time.

These and various other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawing:

FIGURE 1 is a top plan view of the fuel tank, of the type used in conjunction with outboard motor boat engines, showing the installed filtering unit.

FIGURE 2 is an enlarged longitudinal sectional view taken on line 22 of FIGURE 1.

FIGURE 3 is a cross sectional view, enlarged over FIG- URE 2 and taken substantially on line 3-3 of FIGURE 2.

Referring to the drawing wherein like numerals designate like parts, it can be seen that numeral generally refers to a conventional transportable or movable tank such as is used in conjunction with the motors of outboard motor driven boats.

On the top of this tank 10 is a removable plate 11, on which is a handle 12 which permits carrying of the tank from one point to another.

Numeral 13 generally refers to a fuel line consisting of a hose section 14- to the usual motor of the boat (not shown) and a flexible hose section 15 connected to a fitting 16, which extends through the plate 11 and through which fuel is drawn from the tank 10 to pass through the fuel line 13.

The present invention consists of a filtering unit 17 which is made up of a flexible or pliable cylinder 18 of any suitable bendable material, such as will be found in the plastic material line. This cylinder 18 is pliable or otherwise yieldable so that it can bend incident to any bending of the sections 14, 15 or the fuel line 13 in general.

Numeral 19 denotes a metallic, fine mesh filtering cylinder, closed at its end 20, but open at its other end. This is attached to a collar 21. Over the collar 21 and the adjacent end of the cylinder 18, which of course is Fatented Sept. 19, 1961 transparent, is firmly disposed an apron extension 22 of a reduced tubular extension 23, which has the purpose of receiving the adjacent end of the nipple 24 projecting from the section 14 of the fuel line 13, as clearly shown in FIGURES l and 2.

The other end of the transparent and pliable cylinder 18 has a reinforcing ring or collar 25 disposed therein for supporting the adjacent end of the cylinder 18 against the inside of an apron 26 of a connector extension 27, the latter receiving the nipple extension 28 extending from the section 15 of the fuel line 13.

It can be seen that fuel passing through the section 15 of the fuel line, from the fuel tank 10 will pass from the section 15, into the cylinder 18, and surge through and into the filtering element 19, then pass out and into the section 14 of the line 13, to the motor (not shown).

It will therefore be apparent that gasoline will be filtered through the element 19 and that the unit can be disposed of readily and a new unit installed. In other words when the unit becomes filled with foreign matter, the unit can be disposed of and a new unit installed, the cost being very low.

While the foregoing description sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to Without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new In combination with a flexible fuel line extending between a fuel reservoir and an internal combustion engine and having an interrupted area therein, a fuel filter disposed in said interrupted area, said fuel filter comprising an outer shell of flexible, pliable, transparent material, an apron connector having a reduced tubular extension fitted on each end of said shell, the opposed ends of the interrupted fuel line engaging in said extensions, a rigid reinforcing ring disposed interiorly of each end of said shell interiorly of the apron of the adjacent apron connector, a metallic, fine mesh filtering cylinder having an open end disposed interiorly of one of said reinforcing rings and a closed end positioned interiorly of said shell fitted within the confines of said ring, and means securing the open end of said filter about the interior of the reinforcing ring in the end of said shell adjacent said fuel reservoir.

References Cited in the file of this patent UNITED STATES PATENTS 1,539,020 Papastefanou May 26, 1925 2,186,987 Nesset J an. 16, 1940 2,265,550 Smith Dec. 9, 1941 2,341,114 Novak Feb. 8, 1944 2,682,268 Ryan et al June 29, 1954 2,704,544 Ryan Mar. 22, 1955 2,835,391 Bottum May 20, 1958 2,839,195 Reimers et al. June 17, 1958 

